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A. T. GROSS.

sTYLoeRAPHIe FOUNTAIN PML (No Model.)

No. 303,624. Patented Aug. 19, 1884.

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` i an end view ofthe point-section.

i the lower end UNITED STATES PATENT OFFICE.

ALONZO T. CROSS, OF PROVIDENCE, RHODE ISLAND.

STYLOGRAPHIC FOUNTAIN-PEN.

SPECIFICATION forming part Of Letters Patent NO. 303,624, dated August19, 1884.

Application filed June 13, 1884. V(No model.)

io all whom it may concern.-

Be it known that I, ALONZO T. CROSS, of Providence, in the State ofRhode Island, have invented an Improvement in StylographicFountain-Pens, of which the following is a specification.

My improvement relates to that class of fountain-pens in which the airis made to pass into the ink-chamber from the lower end of the pen-case;and it consists in the improved construction and arrangement oftheair-inlet, and also in an annular overflow-chamber, as hereinafter setforth.

Figure l is a longitudinal section of a stylographie pen embodying myimprovement. Fig. 2 is a side elevation of the point-section, with thecovering-sleeve removed. Fig. 3 is Fig. Il is a detail section showing apointeap adapted for closing the pen ink-tight.

In the accompanying drawings, A is the barrel or reservoir of the pen,and B is the point-section.

To the tight1y-tting cap C, at the upper end of the reservoir A, isloosely connected the metal. rod D, at the lower end of which is placedthe hard-rubber coupling E, and into writi 11g-spindle E, which passeslooselythrough the {ine bore of the point-section. The outer side of theinner point-section tube is provided longitudinally with a groove, a,extending downward from the oriiiee b,which serves to admit the air tothe ink-chamber G, and terminating in a circumferential groove, 0, whichextends aroundthe point-section.

In the rim e, at a point diametrically opposite the line of the groovea, is made the airinlet notch d, and over the point-section is placedthe covering-sleeve H, extending for a of the coupling is secured theslight distance below the rim e, thus forming an annularoverflow-chamber, f, adapted to receive the ink forced down by thesuddenexpansion of air at the upper end of the inkchamber.

In order to close the pen perfectlytight, for carrying the same in thepocket, I form the cap I so that its forward end. will fit closelywithin the lower circular edge of the sleeve II, as shown in Fig. 4. Theink will thus be prevented from passing out either at the bore of thepoint-tube or through the airinlet passage when the pen is carried pointdownward `in the pocket.

I claim as my invention- 1. In a stylographic fountain-pen, theeombination of the point-section provided with an oriiee extending fromthe bore of the point-section to the exterior surface of the same, andwith a downward laterally-deflected groove extending from the orifice,with a sleeve adapted to cover the groove, and to form an annularoverflow-chamber around the pointsection, substantially as described.

2. In a stylographie fountain-pen, the com bination of the point-sectionprovided with a sleeve, H, adapted to form an annular overflow-chamber,with the point-cap adapted to pass under the projecting edge of thesleeve, substantially as and for the purpose specified.

3. In a stylographic fountain-pen, the eembination of the point-sectionB, provided with the orifice b, groove a., circumferential groove c, andnotch d, with the covering-sleeve II, adapted to form an annularoverfiow-eham ber, f, substantially as described.

ALONZO T. CROSS.

v \Vitnesses:`

SOCRATES SGHOLEIELD, CEAS. F. SGHMELZ.

